Roland BA-55

Versatile Portable Amplifier (Black) w/ Roland Anti-Feedback Technology & Onboard Effects


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The Roland BA-55, A Multi-Purpose PA with a Twist

The Roland BA-55 offers high-quality sound in just about any environment. It’s built tough yet remains lightweight, and it comes with a matching wireless microphone for singing, public speaking, etc. The BA-55 can be used as a small wireless PA system in business meetings, school classrooms, weddings, restaurants, intimate music venues and more. Something that sets the BA-55 apart from and above its competitors is the internal accelerometer that automatically switches operation mode between stereo (when horizontal) and monophonic (when vertically). Vertical mono mode is best when you’re speaking and need a lot of projection and power. Horizontal is best for music, like when using MP3/CD players at dance parties and such when the aim is a wide stereo spread. It really is that easy! The BA-55 is available in two colors: black (BA-55) or white (BA-55-WH). Select whichever of these colors that will blend in with your environment.

So Easy, a Caveman Could Use It
All things considered, the above statement is pretty accurate. There’s really nothing all that complicated about it. Simply turn on the wireless mic and/or plug in your instruments, set the volume to the desired level (in fact, it's wise to check volume levels before plugging in anything), and you're ready to go. That’s it! No need to worry about feedback, either. The Roland BA-55’s intelligent Anti-Feedback technology detects and eliminates feedback without any interruptions to your audio. The BA-55 also has a handy built-in storage compartment in which to keep your wireless microphone(s) and miscellaneous accessories. The BA-55 lets you enjoy great sound anywhere, indoors or outdoors. The BA-55 is powered through batteries (8 x AA, sold separately) or the included AC adapter.

Built-In Effects
The Roland BA-55 has Echo & Reverb effects that sound great and are easy to use. With a single twist of a knob, you can adjust both the effect type and amount. When you turn the knob from the Off position to 12 o’clock, you'll activate a plate-reverb effect that will add a natural ambience to your instruments and/or voice. When you twist from 12 o’clock to max, you'll switch to an echo effect. No need to fumble around with the knob during performances, either. If you suddenly decide to cut the effect(s), the echo & reverb can be remotely switched off from the included Roland DR-WM55 wireless microphone. How's that for convenience?!

Roland Authorized Reseller Product Features:
  • Battery-powered portable amplifier
  • Portable design with high-quality sound
  • SPL (sound pressure level) rated at an impressive 108 dB
  • Single Roland DR-WM55 2.4 GHz wireless microphone included; pick up a second microphone for simultaneous use
  • Operates on 8 AA batteries or AC power (AC adapter included)
  • Onboard accelerometer sensor switches operation to stereo mode when positioned horizontally
  • Two 6.5" (16 cm) high-performance speakers
  • Three-channel built-in mixer with two-band EQ
  • Echo/Reverb effect
  • Built-in Anti-Feedback technology
  • Line output for recording or expanding the system
  • Integrated storage compartment for storing wireless microphones and accessories
  • Auto Power Off function
  • Also found as: BA55
  • Weight: 19 lbs. 14 oz.
  • Dimensions: 10-7/16"L x 14"W x 18-15/16"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

General Features

Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.

20 watts
Built-In Equalizer
The number of graphic or parametric equalizer bands the stereo receiver is equipped with. The more EQ options, the more you will be able to adjust your music to your liking.
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
DVD Audio
The unit will playback audio files burned onto a DVD disc.
The unit will play Video Compact Discs (VCD). VCD are videos that are stored on regular compact discs (CD) and use a MPEG-1 compression.
The unit will play CDs, also known as Compact Discs. This is the standard format for audio optical discs.
Also known as CD+Graphics and often used for karaoke machines to present on-screen lyrics for the song on the disc.
MP3 Playback
This feature refers to whether or not the CD player will play discs encoded with MP3 files. To burn a MP3 encoded disc, use the "data" mode on your CD Recorder and finalize the session and/or CD.
Memory Card Reader
Whether or not the receiver has a built-in input for removable memory cards such as SD (Secure Digital) cards or MMC (Multimedia) cards.
Microphone Included
Some units that require a microphone come with one, while others do not. This designates whether the item includes a microphone.
Number of Microphones
Some Bluetooth headsets will use multiple microphones to more efficiently capture the users voice.
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.

Speaker Features

An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
108 dB


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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
90 days
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating

R Review

Santa Clarita, CA

Excellent Value and Performance

February 13, 2013

This is an excellent portable sound system which is light weight, plug-in or battery operated, versatile, and powerful. Easily met needs and expectations.

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Roland BA-55

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Roland BA-55

Versatile Portable Amplifier (Black) w/ Roland Anti-Feedback Technology & Onboard Effects


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